9
5
2
1
6
3
7
4
9
6
2
4
9
6
3
1
4
9
1
2
7
4
5
3
9
This Sudoku Puzzle has 63 steps and it is solved using Hidden Single, Locked Candidates Type 1 (Pointing), Naked Triple, Naked Single, Swordfish, Full House techniques.
Naked Single
Explanation
Hidden Single
Explanation
Locked Candidates
Explanation
Full House
Explanation
Solution Steps:
- Row 2 / Column 4 → 9 (Hidden Single)
- Row 3 / Column 1 → 4 (Hidden Single)
- Row 6 / Column 2 → 9 (Hidden Single)
- Row 9 / Column 3 → 2 (Hidden Single)
- Row 4 / Column 7 → 9 (Hidden Single)
- Row 7 / Column 6 → 9 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 6 in b1 => r7c3<>6
- Locked Candidates Type 1 (Pointing): 2 in b2 => r1c78<>2
- Row 6 / Column 7 → 2 (Hidden Single)
- Locked Candidates Type 1 (Pointing): 5 in b6 => r3c9<>5
- Locked Candidates Type 1 (Pointing): 7 in b6 => r9c8<>7
- Naked Triple: 5,7,8 in r2c5,r3c46 => r1c46<>5, r1c46<>8
- Row 1 / Column 7 → 5 (Hidden Single)
- Naked Triple: 5,6,8 in r8c125 => r8c6<>5, r8c689<>8, r8c89<>6
- Row 8 / Column 6 → 1 (Naked Single)
- Swordfish: 5 r359 c246 => r4c46,r6c46,r8c2<>5
- Row 8 / Column 2 → 8 (Naked Single)
- Row 1 / Column 2 → 3 (Naked Single)
- Row 2 / Column 8 → 3 (Hidden Single)
- Row 2 / Column 9 → 2 (Hidden Single)
- Row 8 / Column 9 → 4 (Naked Single)
- Row 8 / Column 8 → 2 (Naked Single)
- Row 2 / Column 2 → 1 (Hidden Single)
- Row 4 / Column 8 → 4 (Hidden Single)
- Row 4 / Column 3 → 1 (Hidden Single)
- Row 5 / Column 4 → 1 (Hidden Single)
- Row 5 / Column 8 → 7 (Hidden Single)
- Row 5 / Column 2 → 5 (Naked Single)
- Row 5 / Column 6 → 8 (Full House)
- Row 9 / Column 2 → 7 (Full House)
- Row 7 / Column 3 → 3 (Naked Single)
- Row 9 / Column 7 → 8 (Naked Single)
- Row 7 / Column 1 → 6 (Naked Single)
- Row 8 / Column 1 → 5 (Full House)
- Row 8 / Column 5 → 6 (Full House)
- Row 3 / Column 7 → 1 (Naked Single)
- Row 7 / Column 7 → 7 (Full House)
- Row 9 / Column 8 → 6 (Naked Single)
- Row 7 / Column 9 → 1 (Full House)
- Row 7 / Column 4 → 8 (Full House)
- Row 1 / Column 8 → 8 (Full House)
- Row 3 / Column 9 → 6 (Full House)
- Row 3 / Column 4 → 5 (Naked Single)
- Row 1 / Column 3 → 6 (Naked Single)
- Row 3 / Column 6 → 7 (Naked Single)
- Row 3 / Column 3 → 8 (Full House)
- Row 2 / Column 1 → 7 (Full House)
- Row 2 / Column 5 → 8 (Full House)
- Row 6 / Column 3 → 7 (Full House)
- Row 9 / Column 4 → 3 (Naked Single)
- Row 9 / Column 6 → 5 (Full House)
- Row 6 / Column 5 → 5 (Naked Single)
- Row 4 / Column 5 → 7 (Full House)
- Row 4 / Column 4 → 2 (Naked Single)
- Row 6 / Column 9 → 8 (Naked Single)
- Row 4 / Column 9 → 5 (Full House)
- Row 1 / Column 4 → 4 (Naked Single)
- Row 1 / Column 6 → 2 (Full House)
- Row 6 / Column 4 → 6 (Full House)
- Row 4 / Column 6 → 3 (Naked Single)
- Row 4 / Column 1 → 8 (Full House)
- Row 6 / Column 1 → 3 (Full House)
- Row 6 / Column 6 → 4 (Full House)
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